Sack packer



W. T. SHALER Aug. 29, 1933.

SACK PACKER Filed April 22, 1932 2 Sheets-Sheet 1 MM Q w. T. 'SHALER Aug. 29, 1933.

SACK PACKER Filed April 22, 1932 2 Sheets-Sheet 2 Patented Aug. 29, 1933 UNITED sures 7 earsan" "jol ricei SACK PACKER William T. Shaler, Silver Creek, N. Y. Application'April22,-1932. Serial No. 01.000

L returns. (01. 259-12) The invention relates to vibrating or jolter packers which are used to pack mill feeds or similar products into sacks, and it aimsto provide a new and improved packer having novel means for supporting and vibrating. the sack support, in such manner that said support moves only in avertical direction, instead of having any rocking motion tending to loosen the material in the sack.

With theforegoing in view, the invention resides in the novel subject matter hereinafter described and claimed, descri ption being accomplished by reference to the accompanying drawings.

Fig. 1 is a side elevation of a packer constructed in accordance with my invention.

will be described in detail, with the understanding however that within the scope of the invention as claimed, numerous minor variations may be made. a

The machine embodies a rigid frame 10, a sack support 11 upon which a filled bag rests unsecured, a lever 12 fulcrumed at 13 to the frame and pivoted at 14 to the sack support 11, linkage 15 connecting an upper portion of the sack support 11 with the frame 10, and means mounted on the frame and connected with the lever 12, for rap idly oscillating or vibrating the lattervertically, sufficiently to pack the sack contents but with insufficient violence to upwardly throw the sack, or

. 0. to .upwardly throw its contents. The portion of the lever 12 in advance of its fulcrum 13, and the linkage 15, constitute parallel linkage of fixed length which insures that the movement of the sack support 11 shall be truly vertical, with no rocking motion, better packing results being thus obtained. a

The frame 10 embodies two side members or frames 16 tied together at their lower ends by a rod 17 and an angle bar 18, tied together between their upper and lower ends by angle bars 19, 20 and 21, and tied together at said upper endsby an angle bar 22.

The lever 12 is disposed between the lower ends of the side members 16, and said lever may be of j the construction detailed in Fig. 5. From this Fig.2 is a vertical longitudinal sectional View lected for illustrationin the present application,

' duced by the vertical motion.

View primarily, it will be seen that lever 12 em- 7 bodiestwo parallel side, members 23 connected near their front ends by atransverse bar 24, conf. nected at their rear ends by a transverse, bar. 25, and connected near said rear ends by another 60 transverse bar, 26. Short websi2'l extend between the bars 25' and 26,and the lower ends of vertical pitman or connecting rods 28, are received be tween said webs and the side members 23, being pivoted thereto as indicated at 29. The upper ends of the pitman or connecting rods 28 are engaged with eccentricslor cranks 30 on a transverse shaft 31 which is mounted in appropriate bear.-. ings 32 on the rear portion of the frame '10. This shaft is driven by means of an electric motor 33 mounted upon an appropriate supporting frame 34 carried by the framelO, a belt 35 andco-acting pulleys being shown for operatively connecting the motor with the shaft. The eccentrics 30-have onlysufficient throw to 'effectvibration for. sack packing and their throw is insufiicient to upwardly throw the sack from the support 37 or to upwardly throw the sack contents.

The sack support llis preferably of the L- shape shown, and it may well consist of a frame 8 3 6, a sack supporting plate 37 secured horizontally upon said frame, and a back plate 38 against which to rest the sack, said back plate being secured'to said frame. In the construction shown, this frame embodies a horizontal bar 39 spaced forwardly from the bar 22, the linkage 15 being connected to these two bars. This linkage is shown in the form of horizontal spring metal strips of fixed length whose rear ends are clamped at 40 upon the bar 22 and whose front ends are similarly clamped at 41 upon the bar 39. If desired however, other linkage of fixed length such as 15 of Fig. 6 may be employed, pivoted at 40 to the bar 22 and pivoted at 41 to the bar 39.

When the shaft 31 is driven by. the motor 33, the eccentrics 30 and rods 28 rapidly oscillate or I vibrate the lever 12 and said lever imparts this vibratory motion to the sack support 11. Hence,

the contents of anysack placed upon this support will be so jolted as to be effectively packed. Due to the mounting of the sack support 11, its vibratory movement will be truly vertical and greater efiiciency will thus be obtained than with supports which are moved vertically andat the same time rocked, for such rocking motion has a tendency to moreor less defeat the packingpro j I claim:-- 1

1. A sack packer comprising two laterally spaced vertical side frames, an elevated horizontal bar extending between and secured to said side frames, a horizontal transverse rod extending between and carried by said side frames in down wardly spaced relation with said horizontal bar, a lever of fixed length between said side frames and fulcrumed between its ends on said rod, said lever having two longitudinal side members, an L-shaped sack support frame and means pivoting this frame to the front ends of said lever side members on an axis parallel with said rod and said elevated bar, the vertical portion of said L-shaped sack supportframe having a horizontal elevated bar parallel with and forwardly spaced from the aforesaid elevated bar, substantially horizontal linkage of fixed length extending between and connected to said elevated bars, a horizontal sacksupport carried bythe horizontal portion of said L-shaped sack support frame, a vertical wall at the rear edge of said sack support and secured to said vertical portion of said sack support frame,

' said sack support and wall serving to support a filled sack in vertical position without necessity of securing the sack, a shaft extending between said'side frames over the rear end of said lever,

said shaft being provided with twoeccentrics spaced apart in the direction of their axis, pitmen connecting said eccentrics with the rear ends of I said lever side members, and means for driving fie.

vertically swingable linkageof fixed length connecting 'an upper portion of said sack support with said frame, said linkage being substant ally parallel with said lever, and means mounted on said frame and connected with said lever for rapidly vibrating the latter sufficiently to pack thesack contents but with insufficient violence to upwardly throw the sack or its contents.

3. A sack packer comprising a rigid frame, a sack support having a horizontally extending lower sack supporting portion and a vertically extending upper frame portion, a vertically swinga vibrate said lever and sack support -to'pack the sack contents but having insufficient throw :to affect upward throwing of the sack or its contents.

4. A sack packer comprising a rigid'frame, a sack support having a horizontally extending sack supporting portion anda vertically extending upper frame portion, a vertically swingable lever of fixed length fulcrumed on said-frame and pivotally connected with said sack support, vertically swingable linkage of fixed length pivotally'con nected with said sack support and with said frame, said linkage and lever being substantially parallel and being connected with said sack's'upport at vertically spaced points, and means mounted on said frame and'connected with said lever for vertically vibrating the latter sufficiently to pack the sack contents but with insufficient violence to upwardly throw the sack from said support.

, WILLIAM I.'SHALER. 

